UNIONDALE - Police say a Uniondale man has been arrested in the death of a 17-month-old boy.

Lord Pardo, 26, was arrested Monday morning and is charged with one count of second-degree murder.

Police say Pardo was at his Uniondale home Sunday baby-sitting his girlfriend's son, Mason Robinson, and his own 3-week-old daughter. They say that Pardo had been dating Robinson’s mother for the last four months, and watched Robinson occasionally while she was at work.